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  • C#微信小程序服务端获取用户解密信息


    1. [csharp] view plain copy
       
      1. using AIOWeb.Models;  
      2. using Newtonsoft.Json;  
      3. using Newtonsoft.Json.Linq;  
      4. using System;  
      5. using System.Collections.Generic;  
      6. using System.Data;  
      7. using System.Data.SqlClient;  
      8. using System.Linq;  
      9. using System.Web;  
      10.   
      11. namespace AIOWeb  
      12. {  
      13.     /// <summary>  
      14.     /// wxapi 的摘要说明  
      15.     /// </summary>  
      16.     public class wxapi : IHttpHandler  
      17.     {  
      18.         public void ProcessRequest(HttpContext context)  
      19.         {  
      20.             context.Response.ContentType = "text/plain";  
      21.   
      22.             string code = "";  
      23.             string iv = "";  
      24.             string encryptedData = "";  
      25.             try  
      26.             {  
      27.                 code = HttpContext.Current.Request.QueryString["code"].ToString();  
      28.                 iv = HttpContext.Current.Request.QueryString["iv"].ToString();  
      29.                 encryptedData = HttpContext.Current.Request.QueryString["encryptedData"].ToString();  
      30.             }  
      31.             catch (Exception ex)  
      32.             {  
      33.                 context.Response.Write(ex.ToString());  
      34.             }  
      35.   
      36.             string Appid = "wxdb2641f85b04f1b3";  
      37.             string Secret = "8591d8cd7197b9197e17b3275329a1e7";  
      38.             string grant_type = "authorization_code";  
      39.   
      40.             //向微信服务端 使用登录凭证 code 获取 session_key 和 openid   
      41.             string url = "https://api.weixin.qq.com/sns/jscode2session?appid=" + Appid + "&secret=" + Secret + "&js_code=" + code + "&grant_type=" + grant_type;  
      42.             string type = "utf-8";  
      43.   
      44.             AIOWeb.Models.GetUsersHelper GetUsersHelper = new AIOWeb.Models.GetUsersHelper();  
      45.             string j = GetUsersHelper.GetUrltoHtml(url, type);//获取微信服务器返回字符串  
      46.   
      47.             //将字符串转换为json格式  
      48.             JObject jo = (JObject)JsonConvert.DeserializeObject(j);  
      49.   
      50.             result res = new result();  
      51.             try  
      52.             {  
      53.                 //微信服务器验证成功  
      54.                 res.openid = jo["openid"].ToString();  
      55.                 res.session_key = jo["session_key"].ToString();  
      56.             }  
      57.             catch (Exception)  
      58.             {  
      59.                 //微信服务器验证失败  
      60.                 res.errcode = jo["errcode"].ToString();  
      61.                 res.errmsg = jo["errmsg"].ToString();  
      62.             }  
      63.             if (!string.IsNullOrEmpty(res.openid))  
      64.             {  
      65.                 //用户数据解密  
      66.                 GetUsersHelper.AesIV = iv;  
      67.                 GetUsersHelper.AesKey = res.session_key;  
      68.   
      69.                 string result = GetUsersHelper.AESDecrypt(encryptedData);  
      70.   
      71.   
      72.                 //存储用户数据  
      73.                 JObject _usrInfo = (JObject)JsonConvert.DeserializeObject(result);  
      74.   
      75.                 userInfo userInfo = new userInfo();  
      76.                 userInfo.openId = _usrInfo["openId"].ToString();  
      77.   
      78.                 try //部分验证返回值中没有unionId  
      79.                 {  
      80.                     userInfo.unionId = _usrInfo["unionId"].ToString();  
      81.                 }  
      82.                 catch (Exception)  
      83.                 {  
      84.                     userInfo.unionId = "unionId";  
      85.                 }  
      86.                   
      87.                 userInfo.nickName = _usrInfo["nickName"].ToString();  
      88.                 userInfo.gender = _usrInfo["gender"].ToString();  
      89.                 userInfo.city = _usrInfo["city"].ToString();  
      90.                 userInfo.province = _usrInfo["province"].ToString();  
      91.                 userInfo.country = _usrInfo["country"].ToString();  
      92.                 userInfo.avatarUrl = _usrInfo["avatarUrl"].ToString();  
      93.   
      94.                 object watermark = _usrInfo["watermark"].ToString();  
      95.                 object appid = _usrInfo["watermark"]["appid"].ToString();  
      96.                 object timestamp = _usrInfo["watermark"]["timestamp"].ToString();  
      97.  
      98.  
      99.                 #region  
      100.   
      101.   
      102.                 //创建连接池对象（与数据库服务器进行连接）  
      103.                 SqlConnection conn = new SqlConnection("server=127.0.0.1;database=Test;uid=sa;pwd=1");  
      104.                 //打开连接池  
      105.                 conn.Open();  
      106.                 //创建命令对象  
      107.                 string Qrystr = "SELECT * FROM WeChatUsers WHERE openId='" + userInfo.openId + "'";  
      108.                 SqlCommand cmdQry = new SqlCommand(Qrystr, conn);  
      109.                 object  obj = cmdQry.ExecuteScalar();  
      110.                 if ((Object.Equals(obj, null)) || (Object.Equals(obj, System.DBNull.Value)))  
      111.                 {  
      112.                     string str = "INSERT INTO WeChatUsers ([UnionId] ,[OpenId],[NickName],[Gender],[City],[Province],[Country],[AvatarUrl],[Appid],[Timestamp],[Memo],[counts])VALUES('" + userInfo.unionId + "','" + userInfo.openId + "','" + userInfo.nickName + "','" + userInfo.gender + "','" + userInfo.city + "','" + userInfo.province + "','" + userInfo.country + "','" + userInfo.avatarUrl + "','" + appid.ToString() + "','" + timestamp.ToString() + "','来自微信小程序','1')";  
      113.   
      114.                     SqlCommand cmdUp = new SqlCommand(str, conn);  
      115.                     // 执行操作  
      116.                     try  
      117.                     {  
      118.                         int row = cmdUp.ExecuteNonQuery();  
      119.                     }  
      120.                     catch (Exception ex)  
      121.                     {  
      122.                         context.Response.Write(ex.ToString());  
      123.                     }  
      124.                 }  
      125.                 else  
      126.                 {  
      127.                     //多次访问，记录访问次数counts   更新unionId是预防最初没有，后期关联后却仍未记录  
      128.                     string str = "UPDATE dbo.WeChatUsers SET counts = counts+1，UnionId = '" + userInfo.unionId + "' WHERE OpenId='" + userInfo.openId + "'";  
      129.                     SqlCommand cmdUp = new SqlCommand(str, conn);  
      130.                     int row = cmdUp.ExecuteNonQuery();  
      131.                 }  
      132.                  
      133.                 //关闭连接池  
      134.                 conn.Close();  
      135.                 #endregion  
      136.   
      137.                 //返回解密后的用户数据  
      138.                 context.Response.Write(result);  
      139.             }  
      140.             else  
      141.             {  
      142.                 context.Response.Write(j);  
      143.             }  
      144.         }  
      145.   
      146.         public bool IsReusable  
      147.         {  
      148.             get  
      149.             {  
      150.                 return false;  
      151.             }  
      152.         }  
      153.     }  
      154. }  


      GetUsersHelper 帮助类

      [csharp] view plain copy
       
      1. using System;  
      2. using System.Collections.Generic;  
      3. using System.IO;  
      4. using System.Linq;  
      5. using System.Security.Cryptography;  
      6. using System.Text;  
      7. using System.Threading.Tasks;  
      8.   
      9. namespace AIOWeb.Models  
      10. {  
      11.     public class GetUsersHelper  
      12.     {  
      13.   
      14.         /// <summary>  
      15.         /// 获取链接返回数据  
      16.         /// </summary>  
      17.         /// <param name="Url">链接</param>  
      18.         /// <param name="type">请求类型</param>  
      19.         /// <returns></returns>  
      20.         public  string GetUrltoHtml(string Url, string type)  
      21.         {  
      22.             try  
      23.             {  
      24.                 System.Net.WebRequest wReq = System.Net.WebRequest.Create(Url);  
      25.                 // Get the response instance.  
      26.                 System.Net.WebResponse wResp = wReq.GetResponse();  
      27.                 System.IO.Stream respStream = wResp.GetResponseStream();  
      28.                 // Dim reader As StreamReader = New StreamReader(respStream)  
      29.                 using (System.IO.StreamReader reader = new System.IO.StreamReader(respStream, Encoding.GetEncoding(type)))  
      30.                 {  
      31.                     return reader.ReadToEnd();  
      32.                 }  
      33.             }  
      34.             catch (System.Exception ex)  
      35.             {  
      36.                 return ex.Message;  
      37.             }  
      38.         }  
      39.         #region 微信小程序用户数据解密  
      40.   
      41.         public static string AesKey;  
      42.         public static string AesIV;  
      43.   
      44.         /// <summary>  
      45.         /// AES解密  
      46.         /// </summary>  
      47.         /// <param name="inputdata">输入的数据encryptedData</param>  
      48.         /// <param name="AesKey">key</param>  
      49.         /// <param name="AesIV">向量128</param>  
      50.         /// <returns name="result">解密后的字符串</returns>  
      51.         public string AESDecrypt(string inputdata)  
      52.         {  
      53.             try  
      54.             {  
      55.                 AesIV = AesIV.Replace(" ", "+");  
      56.                 AesKey = AesKey.Replace(" ", "+");  
      57.                 inputdata = inputdata.Replace(" ", "+");  
      58.                 byte[] encryptedData = Convert.FromBase64String(inputdata);  
      59.   
      60.                 RijndaelManaged rijndaelCipher = new RijndaelManaged();  
      61.                 rijndaelCipher.Key = Convert.FromBase64String(AesKey); // Encoding.UTF8.GetBytes(AesKey);  
      62.                 rijndaelCipher.IV = Convert.FromBase64String(AesIV);// Encoding.UTF8.GetBytes(AesIV);  
      63.                 rijndaelCipher.Mode = CipherMode.CBC;  
      64.                 rijndaelCipher.Padding = PaddingMode.PKCS7;  
      65.                 ICryptoTransform transform = rijndaelCipher.CreateDecryptor();  
      66.                 byte[] plainText = transform.TransformFinalBlock(encryptedData, 0, encryptedData.Length);  
      67.                 string result = Encoding.UTF8.GetString(plainText);  
      68.   
      69.                 return result;  
      70.             }  
      71.             catch (Exception)  
      72.             {  
      73.                 return null;  
      74.   
      75.             }  
      76.         }  
      77.         #endregion  
      78.     }  
      79. }  
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  • 原文地址：https://www.cnblogs.com/jjg0519/p/6858652.html
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